• HEADINGS
  • Component Location Index
  • Circuit Diagram
  • Control Unit Input Test
  • Ignition Key Switch Test
  • Ignition Key Light Test
• FIGURES
  • Fig. 1: Identifying Entry Lights Control System Component Location
  • Fig. 2: Entry Lights Control System - Circuit Diagram
  • Fig. 3: Identifying Multiplex Integrated Control Unit Connectors Terminals
  • Fig. 4: Identifying Door Multiplex Control Unit Connector Terminals
  • Fig. 5: Identifying Ignition Key Switch 6P Connector Terminal
  • Fig. 6: Identifying Ignition Key Light 6P Connector Terminal
• TABLES
  • TEST CONDITION REFERENCE CHART
  • TEST CONDITION REFERENCE CHART
  • TEST CONDITION REFERENCE CHART

2004-08 ACCESSORIES & EQUIPMENT

Entry Lights Control System - TSX

Component Location Index

Fig. 1: Identifying Entry Lights Control System Component Location
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Circuit Diagram

Fig. 2: Entry Lights Control System - Circuit Diagram
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Control Unit Input Test

1. Before testing the entry light control functions, troubleshoot the multiplex integrated control system using B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

   Multiplex Integrated Control Unit

2. Remove the left kick panel (see TRIM REMOVAL/INSTALLATION - DOOR AREAS ).
3. Disconnect the under-dash fuse/relay box connectors.

   NOTE:

   All connectors are shown from the wire side of female terminals.

   Fig. 3: Identifying Multiplex Integrated Control Unit Connectors Terminals
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

4. Inspect the connector terminals to be sure they are all making good contact.
   • If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
   • If the terminals look OK, go to step 5.
5. Reconnect the connectors to the under-dash fuse/relay box, turn the ignition switch ON (II), and make these input tests at the appropriate connectors on the under-dash fuse/relay box.
   • If any test indicates a problem, find and correct the cause, then recheck the system.
   • If all the input tests prove OK, go to step 6.

   TEST CONDITION REFERENCE CHART
   

   Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
   P1	BRN	Under all conditions	Measure the voltage to ground: There should be less than 1 V.	Poor ground (G502) An open in the wire
   E9	BLK	Under all conditions	Measure the voltage to ground: There should be less than 1 V.	Poor ground (G601) An open in the wire
   E15	GRN	Driver's door open	Measure the voltage to ground: There should be less than 1 V.	Faulty driver's door switch An open in the wire
   		Driver's door closed	Measure the voltage to ground: There should be 5 V or more.	Faulty driver's door switch Short to ground
   H12	LT GRN/RED	Front passenger's door open	Measure the voltage to ground: There should be less than 1 V.	Faulty front passenger's door switch An open in the wire
   		Front passenger's door closed	Measure the voltage to ground: There should be 5 V or more.	Faulty front passenger's door switch Short to ground
   EH	GRN/YEL	Left rear door open	Measure the voltage to ground: There should be less than 1 V.	Faulty left rear door switch An open in the wire
   		Left rear door closed	Measure the voltage to ground: There should be 5 V or more.	Faulty left rear door switch Short to ground
   H13	GRN/WHT	Right rear door open	Measure the voltage to ground: There should be less than 1 V.	Faulty right rear door switch An open in the wire
   		Right rear door closed	Measure the voltage to ground: There should be 5 V or more.	Faulty right rear door switch Short to ground
   P13	RED/WHT*1 RED*2	Ignition key inserted into the ignition switch	Measure the voltage to ground: There should be less than 1 V.	Poor ground (G501) Faulty ignition key switch An open in the wire
   		Ignition key removed from the ignition switch	Measure the voltage to ground: There should be 5 V or more.	Faulty ignition key switch Short to ground

6. Disconnect the under-dash fuse/relay box connectors J (21P), P (30P) and W (5P), and make these input tests at the connector.
   • If any test indicates a problem, find and correct the cause, the recheck the system.
   • If all the input tests prove OK, reconnect the connectors to the fuse/relay box, then go to step 7.

   TEST CONDITION REFERENCE CHART
   

   Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
   P7	WHT/BLK*1 WHT*2	Under all conditions	Attach to ground: Ignition key light should come on.	Blown No. 13 (20 A) fuse in the under-hood fuse/relay box Faulty ignition key light (LED) An open in the wire
   W4	GRN/RED	Ceiling light switch in middle position	Attach to ground: Ceiling light(s) should come on.	Blown No. 6 (10 A) fuse in the under-dash fuse/relay box Blown bulb Faulty ceiling light An open in the wire
   J4	BRN/RED	Power window master switch 23P connector disconnected	Check for continuity between under-dash fuse/relay box connector J (21P) No. 4 terminal and power window master switch (23P) connector No. 16 terminal	An open in the wire
   				Short to ground

   Door Multiplex Control Unit

7. Remove the driver's door panel (see FRONT DOOR PANEL REMOVAL/INSTALLATION ).
8. Disconnect the 23P connector from the door multiplex control unit.
9. Inspect the connector and socket terminals to be sure they are all making good contact.
   • If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
   • If the terminals look OK, go to step 10.

     Fig. 4: Identifying Door Multiplex Control Unit Connector Terminals
     Courtesy of AMERICAN HONDA MOTOR CO., INC.

10. Reconnect the connector to the door multiplex control unit, turn the ignition switch ON (II), and make these input tests at the connector.
    • If any test indicates a problem, find and correct the cause, then recheck the system.
    • If all the input tests prove OK, the control unit must be faulty; replace it.

    TEST CONDITION REFERENCE CHART
    

    Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
    22	YEL/RED	Driver's door lock knob locked	Measure the voltage to ground: There should be less than 1 V.	Faulty driver's door lock actuator Poor ground (G501) An open in the wire
    		Drive's door lock knob unlocked	Measure the voltage to ground: There should be 5 V or more.	Faulty driver's door lock actuator Short to ground
    8	WHT/RED	Driver's door key cylinder switch in LOCK	Measure the voltage to ground: There should be less than 1 V.	Faulty driver's door key cylinder switch Poor ground (G501) An open in the wire Short to ground
    		Driver's door key cylinder switch in the neutral position	Measure the voltage to ground: There should be 5 V or more.
    		Driver's door key cylinder switch in UNLOCK	Measure the voltage to ground: There should be 5 V or more.
    21	WHT	Driver's door key cylinder switch in UNLOCK	Measure the voltage to ground: There should be less than 1 V.	Faulty driver's door key cylinder switch Poor ground (G501) An open in the wire Short to ground
    		Driver's door key cylinder switch in the neutral position	Measure the voltage to ground: There should be 5 V or more.
    		Driver's door key cylinder switch in LOCK	Measure the voltage to ground: There should be 5 V or more.
    7	WHT/BLK	Driver's door lock knob unlocked	Measure the voltage to ground: There should be less than 1 V.	Faulty driver's door lock actuator Poor ground (G501) An open in the wire
    		Driver's door lock knob locked	Measure the voltage to ground: There should be 5 V or more.	Faulty driver's door lock actuator Short to ground

Ignition Key Switch Test

1. Remove the steering column upper and lower covers (see STEERING COLUMN REMOVAL AND INSTALLATION ).
2. Disconnect the 6P connector.

   Fig. 5: Identifying Ignition Key Switch 6P Connector Terminal
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. Check for continuity between the No. 1 and No. 2 terminals.
   • There should be continuity with the key in the ignition switch.
   • There should be no continuity with the key removed.
4. If the continuity is not as specified, replace the ignition switch.

Ignition Key Light Test

1. Remove the steering column upper and lower covers (see STEERING COLUMN REMOVAL AND INSTALLATION ).
2. Disconnect the 6P connector.

   Fig. 6: Identifying Ignition Key Light 6P Connector Terminal
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. The LED should come on when power is connected to the No. 6 terminal and ground is connected to No. 5 terminal.
4. If the LED does not come on, replace the ignition switch.